Door latch



. July 29, 1930. c, HENNICKE 1,771,677

DOOR LATCH Filed Nov. 25, 1927 '2 Sheets-Sheet l July 29, 1930.

C. R. HENNICKE DOOR LATCH Filed Nov. 25, 1927 2 Sheets-Sheet 2 INVENT MaPatented July 29, 1930 UNITED stratus NT} OF CARL n. HENNICKEQOFCLEVELAND, otrro, nssrsivon 'ro THE BERHARDL MANUFAC- TUBING coM'rA'n'Y,or CLEVELAND,

OHIO, A .CORPORATTON DF OHI O DOOR LATCH Application. filed November 25,1927. Serial No. 235, L- i vided a latch of very simpleand compactconstruction which can be cheaply manufactured and which can be used ona very narrow doorstile. The latch can be used on both right andleft-handed doors without any change, and can be used for latching thedoor open as well as closed. The latch is providcd withan inside handle,and provisionis made also for the use of an outside handle,

the construction being such that the 3 outside handle is brought closeto the edge of the door.

The compact construction of the latchand the convenient'dispositionthereof on the door permits the door to be opened a maximum amount.

The invention maybe readily understood by referenceto the in whichtionof a sliding latch embodying my invention applied thereing plate. insidethe casing;

Figure is a side elevation of the latch applied to the door, part of thedoor being broken away to show. the construction of the.

outside. handle; Figure 3 is a plan view of housing of the latch;

Figure 4: is a section on the line IV-IV of Figure 3;

Figure 5 is an elevation of thecover plate for the casing; 4o

'Figure 6 is a vertical section on the line VL-VI' of Figure 5; i

Figure 7 is an elevation of Figure 8 is a side elevation of the membershown in Figure 7; Figure 9 isa side'elevationv bined rollback andhandle construction;

' Figure 10 is a front elevation of the member shown in Figure'9 andFigure 11 is a perspective view of one of accompanying drawings,

the casing or lower end thereof, thelugs 17 the bolt .01 slidsubstantially equal .to the 1 so thatwhen the sliding plate is in thecasin of the com-.

. plate part thereoflthe outer surface of the back of the post C inopening the door. As

shown in Figure 1, the door is partially open. The latch, which isadapted to be secured to the stile A, comprises a casing 2 :having sideflanges 3 and end flanges 4. 'On each of the end flanges a is apad 5. Ineach of the side flanges 3 is an openingfi and extending inwardlyfromthe side flanges'3 below the opening 6 are lugs 7 The p casingispreferably made of pressed sheet. metal and the lugs 7 are struckinwardly from the flanges 3 to form ,the opening 6. In the face-ofthecasing is in the top end of the flange 4 is a slot 9.; Received in thecasing is I a sliding plate or bolt 10 whichis also prefera circularopening 8 and ably formed of-sheet metal. The central port on ofthe'member 10 isof substantially the same width as the inside of thecasing 2, and has a pair ofout-wardly turned lugs 11 thereon, one ofthese lugs beingat each side of the plate, as best shown in Figures 7and 8. The

upper endof the sliding plate 10 is bifurcated to provide a centralopening 12 with lugs 13 at each side thereof. an overturned lug llthereon. The portion of the plate below the lugs 11 is of reduced width,this portion of reduced width being designated 15. At each side of theportion 15 is an outwardly turned flangelG. Each of the flanges 16 has alaterally turned lug 17 at the in opposite directions away from eachother. The narrowgportion15ofthe sliding plate extends between thehigsfinthe casing.- The height of the lugs or fiangeslfl is preferablydepth of the casing with the flanges llfandlfi turned toward the plate10 will besubstantially flush with the edges. of-the flanges 3 and 4. Acover plate 18. is placed .over the casing2 but includes Each of thelugs 13 has being turned the sliding plate 10. The cover plate 18 may beriveted or otherwise fitted to the casing by means of rivets 19 passingthrough registering holes 20 and 21 in the cover plateand casingrespectively. The casing and cover late 18 also have registering holes22 throug which bolts orscrews 23pass to secure the lock to the door.The cover plate 18 has a circular hole 24 which registers with theopening 8 in the casing. The cover plate also has inwardly struckprojections 25 thereon.

In the casing, between the casing and the cover plate, is a rollbackhaving a central portion 26 with lateral projections 27 at each sidethereof. The projections 27 engageunder'the lugs 14 of the sliding plateor bolt.

The ends of the part 26 are round and are reduced as indicated at 28.These portions 28' are received in the openings 8' and 24 of thecasingand cover plate respectively to provide a rotatable mounting for therollback. Projecting upwardly from the portion 26 through the slot '9 isa handle 29. The part 26 of the rollback has a square hole 30therethrough.

Inside the casing, between the inwardly turned lugs or ears 7 of theside flanges 3 and the end lugs 17 of the slidingplate or bolt 10, arecompression springs 31 which function to urge the plate 10 downwardly.The flanges 16 serve to confine thesprings, and the projections 25 alsofunction tohold the springs in proper position in the casing.

In the normal position of the various parts, the end lugs 17 are spacedabove the bottom flange 4 of the casing and the springs 31' urge thelugs 14 of the bolt into contact with lugs 27 of the handle. The lugs orears 11 project down part way but not entirely across the openings 6 inthe side fianges3, and the handle 29 is vertical with the tops of thelugs 27 horizontal. The lugs 14 are in contact with the tops of the lugs27 of the tumbler.

For cooperation with the lugs 11 there is provided one-or more keeperelements having a base portion '32 with an outwardly extending shankportion 33 on which isa' head 34. One of these keeper members is mountedon the post B and another is mounted on the frame C.

When the door is closed, the keeper head 34 enters theopeningG at oneside of the casi-ng lifting the bolt 10 against the action .of thesprings 31. The springs then snap the bolt back so that-the lugs 11engage in back of .the head 34. To open .the door the handle 29 isrocked in either direction. 0116101614116 lugs 27 engaging under a lug14 of the plate "10 slides the plate 10 upwardly until the lug 11 israised out of cooperating position with the keeper head 34. By reason ofthe fact that there are two lugs 11 and an opening6 at the'edge of thecasing,the latch can be used on either a rightor lefthanded door. Ito-an.azlsoybe ,used to cooperate with the keeper element on the post C forholding the door open. This is desirable on cabs of trucks for summerdriving.

For opening the door from the outside there is provided a square stem 35that passes through the door and through the square hole 30 in theportion 26 of the rollback. On the outer end of the stem is a handle orwings 36 for turning the stem 35 to operate the rollback. The handle 36is preferably set in a cup 37 in a recess in the door, as best shown inFig ure 2.

The latch as described is of extremely simpleconstruction and can becheaply manufactured. It has few operating parts and its operation ispositive. The parts can be assembled into a compact casing so that thelatch does not take up much room on the door. Consequently, it permitsthe door to be opened a maximum distance. The parts can be cheaplymanufactured.

The lugs 11 may be provided with stiffening ribs 11, these ribs beingpressed into the metal and being continued into the body of the plate10, as shown in Figures 7 and 8.

lVbile it is preferred that most of the parts be made from pressed sheetmetal, it will be understood that they can be otherwise constructed andthat various changes and modifications can be made in the constructionand arrangement of parts within the contemplation of my invention andunder the scope of the following claims.

I claim: I v

1. A. latch comprising a casing, a cover plate for the casing, and abolt member in the casing comprising a plate having two lugs thereonintermediate the ends thereof, having two lugs at the top thereof andhaving a lug at the bottom thereof, an internal lug in the casing, aspring interposed between said internal lug and the bottom of said boltmember, a rollback rotatably supported in the casing at the top thereofhaving laterally projecting lugs for cooperation with the lugs on topofsaid bolt member, said casing having openings therein at each sidethereof, the lugs on said bolt member intermediate the ends thereofnormall projecting part way across the said openings in the casing.

2. A latch comprising a casing, a bolt member in the casing comprising aplate having intermediate lugs thereon and having lugs at each endthereof, the intermediate lugs being of a height substantially equal tothe depth of the casing, a cover plate for the casing against whichsaidbolt member is adapted to. bear, springs in the casing actingagainst the lugs at the bottom of the bolt member and a rollback in thecasing adapted to cooperate with the lugs on the top of said boltmember, said rollback having a handle thereon projecting through thecasing.

.3. A latch comprising a casing having side and end walls, a cover plateon the casing, a rollback rotatably supported in the casing and coverplate, a bolt member in the casing having a lug at one end thereof forcooperation with the rollback, said bolt member having a lug at theopposite end thereof, a lug in the casing, a spring interposed betweenthe casing lug and the lug at the bottom of said bolt member, one of thesides of the easing having an opening therein, and means on the boltmember adapted to normally project part way across said opening.

4. A latch comprising a casing having side and end flanges, a boltmember in the casing having a wide intermediate portion with a lug ateach side thereof, said bolt member having a bifurcated upper portionwith a leg at each side of the bifurcation, each leg having a lugthereon, a reduced extension at the opposite end of the bolt memberhaving a flange at each side thereof, each flange having a laterallyturned lug at the bottom thereof, each of the side flanges of the casinghaving an opening therein, said casing havin a lug at each side thereofbelow said openlngs, the reduced portion of the bolt extending betweensaid lugs in the casing, and a pair of springs in the casing between thelugs in the casing and the said lugs at the bottom of the flanges of thebolt member, a rollback rotatably supported in the casing having a pairof lugs thereon for cooperation with the lugs on the legs of the upperend of the bolt member, a handle on said rollback projecting through thecasing, and a cover plate for the casing.

In testimony whereof I have hereunto set my hand.

CARL R. HENNICKE.

